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fee_burn.go
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fee_burn.go
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package keeper
import (
"github.com/AstraProtocol/astra/v2/cmd/config"
feeburntype "github.com/AstraProtocol/astra/v2/x/feeburn/types"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerrors "github.com/cosmos/cosmos-sdk/types/errors"
authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
"strings"
)
// BurnFee takes the total fees and burn 50% (or param set)
func (k Keeper) BurnFee(ctx sdk.Context, bankKeeper feeburntype.BankKeeper,
totalFees sdk.Coins,
params feeburntype.Params) error {
if !params.EnableFeeBurn {
return nil
}
if totalFees.IsZero() {
return nil
}
var feeBurn sdk.Coins
totalBurnAmount := sdk.NewDec(0)
for _, c := range totalFees {
burnAmount := params.FeeBurn.MulInt(c.Amount).RoundInt()
if burnAmount.IsPositive() && strings.Compare(c.Denom, config.BaseDenom) == 0 {
feeBurn = feeBurn.Add(sdk.NewCoin(c.Denom, burnAmount))
totalBurnAmount = totalBurnAmount.Add(burnAmount.ToDec())
}
}
err := bankKeeper.SendCoinsFromModuleToModule(ctx, authtypes.FeeCollectorName, feeburntype.ModuleName, feeBurn)
if err != nil {
return sdkerrors.Wrapf(err, feeburntype.ErrFeeBurnSend.Error())
}
err = bankKeeper.BurnCoins(ctx, feeburntype.ModuleName, feeBurn)
if err != nil {
return sdkerrors.Wrapf(err, feeburntype.ErrFeeBurn.Error())
}
newTotalFeeBurn := k.GetTotalFeeBurn(ctx)
newTotalFeeBurn = newTotalFeeBurn.Add(totalBurnAmount)
k.SetTotalFeeBurn(ctx, newTotalFeeBurn)
return nil
}